US2022298344A1PendingUtilityA1

Ethylene/alpha-olefin/polyene interpolymer compositions

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Assignee: DOW GLOBAL TECHNOLOGIES LLCPriority: Sep 24, 2019Filed: Sep 21, 2020Published: Sep 22, 2022
Est. expirySep 24, 2039(~13.2 yrs left)· nominal 20-yr term from priority
Inventors:Xiaosong WuVarun Thakur
C08L 23/16C08F 4/65912C08L 2205/035C08K 3/04C08L 2205/025C08L 2312/00C08F 4/65908C08K 3/34C08F 210/18
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Claims

Abstract

A composition comprising a first composition and a second composition, and wherein the first composition comprises a first ethylene/alpha-olefin/nonconjugated polyene interpolymer and a second ethylene/alpha-olefin/nonconjugated polyene interpolymer; and wherein the second composition comprises a third ethylene/alpha-olefin/non-conjugated polyene interpolymer and a fourth ethylene/alpha-olefin/nonconjugated polyene interpolymer; and wherein the first composition has a Mooney Viscosity (ML(1+4), 125° C.)≥50, and a Rheology Parameter ((RR/Mn)×1000)≥0.50; wherein the second composition has a Mooney Viscosity (ML(1+4), 125° C.)<50, and a Rheology Parameter ((RR/Mn)×1000)≥0.60.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A composition comprising a first composition and a second composition, and
 wherein the first composition comprises a first ethylene/alpha-olefin/nonconjugated polyene interpolymer and a second ethylene/alpha-olefin/nonconjugated polyene interpolymer; and   wherein the second composition comprises a third ethylene/alpha-olefin/non-conjugated polyene interpolymer and a fourth ethylene/alpha-olefin/nonconjugated polyene interpolymer; and   wherein the first composition has a Mooney Viscosity (ML(1+4), 125° C.)≥50, and a Rheology Parameter ((RR/Mn)×1000)≥0.50;   wherein the second composition has a Mooney Viscosity (ML(1+4), 125° C.)<50, and a Rheology Parameter ((RR/Mn)×1000)≥0.60.   
     
     
         2 . The composition of  claim 1 , wherein the first composition has a Rheology Parameter, ((RR/Mn)×1000), ≤0.76. 
     
     
         3 . The composition of  claim 1 , wherein the second composition has a Rheology Parameter, ((RR/Mn)×1000), ≤2.00. 
     
     
         4 . The composition of  claim 1 , wherein the first composition has a RR/MWD ratio ≥9.00. 
     
     
         5 . The composition of  claim 1 , wherein the first composition has a molecular weight distribution MWD≥2.40. 
     
     
         6 . The composition of  claim 1 , wherein the second composition has a molecular weight distribution MWD≥4.00. 
     
     
         7 . The composition of  claim 1 , wherein, for the first composition,
 the first interpolymer is a first EPDM and the second interpolymer is a second EPDM; and   wherein the second EPDM differs from the first EPDM in at least one property selected from Mn, Mw, Mz, MWD, Mooney Viscosity, V0.1, V100, RR, or any combination thereof.   
     
     
         8 . The composition of  claim 1 , wherein the composition has a ratio {[RR] First Composition /[RR] Second Composition }≥0.90. 
     
     
         9 . The composition of  claim 1 , wherein the composition has a ratio {[MWD] First Composition /[MWD] Second Composition }≥0.400. 
     
     
         10 . The composition of  claim 1 , wherein the composition further comprises a calcined filler formed from a filler composition comprising a kaolinite. 
     
     
         11 . The composition of  claim 1 , wherein the composition further comprises carbon black. 
     
     
         12 . A crosslinked composition formed from the composition of  claim 1 . 
     
     
         13 . An article comprising at least one component formed from the composition of  claim 1 . 
     
     
         14 . The article of  claim 13 , wherein the article is an extruded article, an injection molded article, or a thermoformed article. 
     
     
         15 . The article of  claim 13 , wherein the article is selected from a weather strip, a hose, a belt, a building material, a roofing membrane, a wire and cable jacket, an flooring material, a computer part, a gasket, or a tire.

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